From: Andrew Cooper <andrew.cooper3@citrix.com>
To: "quizy_jones@outlook.com" <quizy_jones@outlook.com>,
xen-devel <xen-devel@lists.xen.org>
Subject: Re: xen panics when setting int3 traps
Date: Fri, 11 Dec 2015 09:54:40 +0000 [thread overview]
Message-ID: <566A9D60.9000708@citrix.com> (raw)
In-Reply-To: <BLU436-SMTP249586E560741E427C75C7490EA0@phx.gbl>
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On 11/12/15 01:42, quizy_jones@outlook.com wrote:
> I'd like to inject int3 traps to hypercall handlers to be able to
> capture hypercalls. However, the dom0/xen would reboot whenever I
> create a new VM. Followup is the console output when this happens.
> <snip>
> *(XEN) Xen call trace:*
> (XEN) [<ffff82d080128132>] _write_unlock+0x22/0x40
> (XEN) [<ffff82d080115b98>] guest_remove_page+0xf8/0x2e0
> (XEN) [<ffff82d080116138>] do_memory_op+0x3b8/0x2750
> (XEN) [<ffff82d08017c29c>] __do_update_va_mapping+0x1bc/0x6c0
> (XEN) [<ffff82d08021aef9>] syscall_enter+0xa9/0xae
> (XEN)
> (XEN)
> (XEN) ****************************************
> (XEN) Panic on CPU 0:
> *(XEN) FATAL TRAP: vector = 6 (invalid opcode)*
> (XEN) ****************************************
> (XEN)
> (XEN) Reboot in five seconds...
>
> BTW, I'm using a nested xen 4.4.1 on xen 4.6.0.
How are you injecting the traps? Unless you explicitly register a
debugger with Xen, it will consider any debugging of itself fatal, as
you can see.
~Andrew
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prev parent reply other threads:[~2015-12-11 9:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-11 1:42 xen panics when setting int3 traps quizy_jones
2015-12-11 2:01 ` quizy_jones
2015-12-11 2:17 ` Konrad Rzeszutek Wilk
2015-12-11 3:13 ` quizy_jones
2015-12-11 10:20 ` Tim Deegan
2015-12-17 1:35 ` quizyjones
2015-12-18 15:31 ` Andrew Cooper
2015-12-19 4:23 ` quizyjones
2015-12-18 6:15 ` Tian, Kevin
2015-12-11 9:54 ` Andrew Cooper [this message]
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